Abstract
The 3.39 μm He-Ne infrared laser absorption technique is useful for measuring hydrocarbon concentration. To measure the concentration of propane or methane in hydrocarbon fuels, molar absorption coefficients for 3.39 μm wavelength were investigated in the temperature range 285 to approximately 420 K and in the pressure range 100 to approximately 800 kPa. It was found that (1) the absorption coefficient ε is independent of temperature, and (2) the pressure has little effect on ε in propane, but a strong effect on ε in methane. By means of this technique, the fuel concentration in the vicinity of a spark plug and HC concentration in an exhaust pipe of a spark ignition engine were measured under the condition of no residual gas and homogeneous mixture. For the lean mixture operating condition, although cycle-to-cycle fluctuation of the fuel concentration was very small, the fluctuation of pressure in the cylinder was large.
| Original language | English |
|---|---|
| Pages (from-to) | 1200-1205 |
| Number of pages | 6 |
| Journal | Nippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B |
| Volume | 62 |
| Issue number | 595 |
| Publication status | Published - Mar 1996 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Mechanical Engineering
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Measurement of hydrocarbon fuel concentration by 3.39 μm He-Ne laser infrared absorption technique. / Yoshiyama, Sadami; Hamamoto, Yoshisuke; Tomita, Eiji; Minami, Ken ichi.
In: Nippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B, Vol. 62, No. 595, 03.1996, p. 1200-1205.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Measurement of hydrocarbon fuel concentration by 3.39 μm He-Ne laser infrared absorption technique
AU - Yoshiyama, Sadami
AU - Hamamoto, Yoshisuke
AU - Tomita, Eiji
AU - Minami, Ken ichi
PY - 1996/3
Y1 - 1996/3
N2 - The 3.39 μm He-Ne infrared laser absorption technique is useful for measuring hydrocarbon concentration. To measure the concentration of propane or methane in hydrocarbon fuels, molar absorption coefficients for 3.39 μm wavelength were investigated in the temperature range 285 to approximately 420 K and in the pressure range 100 to approximately 800 kPa. It was found that (1) the absorption coefficient ε is independent of temperature, and (2) the pressure has little effect on ε in propane, but a strong effect on ε in methane. By means of this technique, the fuel concentration in the vicinity of a spark plug and HC concentration in an exhaust pipe of a spark ignition engine were measured under the condition of no residual gas and homogeneous mixture. For the lean mixture operating condition, although cycle-to-cycle fluctuation of the fuel concentration was very small, the fluctuation of pressure in the cylinder was large.
AB - The 3.39 μm He-Ne infrared laser absorption technique is useful for measuring hydrocarbon concentration. To measure the concentration of propane or methane in hydrocarbon fuels, molar absorption coefficients for 3.39 μm wavelength were investigated in the temperature range 285 to approximately 420 K and in the pressure range 100 to approximately 800 kPa. It was found that (1) the absorption coefficient ε is independent of temperature, and (2) the pressure has little effect on ε in propane, but a strong effect on ε in methane. By means of this technique, the fuel concentration in the vicinity of a spark plug and HC concentration in an exhaust pipe of a spark ignition engine were measured under the condition of no residual gas and homogeneous mixture. For the lean mixture operating condition, although cycle-to-cycle fluctuation of the fuel concentration was very small, the fluctuation of pressure in the cylinder was large.
UR - http://www.scopus.com/inward/record.url?scp=0030103711&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0030103711&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0030103711
VL - 62
SP - 1200
EP - 1205
JO - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
JF - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
SN - 0387-5016
IS - 595
ER -